WAT IS MEANT BY COLD AND HOT START OF A MOTOR?? HOW DOES IT
AFFECT A MOTOR'S PERFORMANCE??
Answers were Sorted based on User's Feedback
Answer / avd
Cold start : Starting the motor when it is cold. Means when
motor stoped and starts after long delay, considered as
cold start. Techanically if motor thermal containt is less
than 50%, it is considered cold.
Hot start : When motor is hot and you give start. Means
stoping the motor and immediately restarting is hot
start.Techanically if the motor thermal containt is more
than 50% and a start is given to motor, it is a hot start.
Effect : Any start of motor will result in increase of
thermal containt. If motor is hot (hot start given) than
motor thermal containt further increase hence there will be
detorioration in the insulation and thus life of motor.
Is This Answer Correct ? | 72 Yes | 6 No |
Answer / sophia
Hot start and cold start refer to the temperature of the motor when starting. Hot start is usually a restart after coasting to a stop. Cold start is an initial start, after not having run for a relatively long period of time. This is important because there is usually a limit on the number of hot starts that are allowed in a certain period of time. This is due to the fact that these motors pull more current starting than when they run, and if you start them too often they can overheat.
Is This Answer Correct ? | 14 Yes | 0 No |
Answer / mohamed
COLD : motor @ ambient temperatureā¢
HOT : motor @ rated temperature for specific class and service factor.
Is This Answer Correct ? | 4 Yes | 26 No |
cold start its first start of motor
when the first time u start the motor
hot start of a motor means
second start of motor , after first start of motor u stop
the motor and again u start the motor then motor condition
is hot thats why it is known is hot start
prformance ???
when u start at cold condition , motor takes more starting
current for getting in synchronus condition
and in hot condition motor is already hot thats y it's
starting easy then cold
Is This Answer Correct ? | 16 Yes | 42 No |
How many earthings are required for motors?
it is clear that volts equal to the current as per ohms law. is it appliable to the AC power or only for DC. if it is appliacable to AC in transformers when voltage increases the voltage decreases ????? why??????????????
WHAT IS THE MINIMUM IR VALUE FOR CABLE CHARGING
What is working principle of washing machine?
What the reson for frequant instantaneous ground over current fault in our sync. Generator... 15 triping in 24 hr...
1 Answers HCPL, Jhunjhunwala Vanaspati Jhoola, Regen Powertech,
EXPLIAN THE IMPORTANCE OF POLY PHASE CIRCUIT.
How the FM200 Gas Supression System wil Work????
What is VFD, and how its work
What facility we get after CT secondary earthing and how?
What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?
Dear sir, my knowledge about cable size determination is limited. Though I read examples I could not calculate the Cable size required for electric driven pump 40 KW, 380 Volt, 50 HZ, 50 meter from transformer and it is three phase star delta starting. Please help as there is no one in my surroundings to help.
1 HP = how many kw